While the proportion of CD8 T cells in the spleen of WT C57BL/6 mice, “sash” mice, and (BM)MC-reconstituted “sash” mice proved to be generally low and not notably influenced by infection and absence or presence of MC (Fig. 6A, left panel), the export into the circulation (center panel) and the recruitment to the lungs (right panel) were strongly induced by the infection, which is in accordance with the experience made with HCT models of pulmonary mCMV infection [10], [11]. Here, CD8A is linked to infection.